Home / 628,457.17-943,153.45-308,780.64

Finding the Fourth Proportional to 628,457.17, 943,153.45 and 308,780.64

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Solution

The fourth proportional to 628,457.17, 943,153.45 and 308,780.64 is: 463,400.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,457.17 : 943,153.45 = 308,780.64 : x
  2. Step 2: Convert to fraction form
    628,457.17/943,153.45 = 308,780.64/x
  3. Step 3: Cross multiply
    628,457.17x = 943,153.45 × 308,780.64
  4. Step 4: Simplify right side
    628,457.17x = 291,227,525,909.21
  5. Step 5: Solve for x
    x = 291,227,525,909.21/628,457.17
  6. Step 6: Final answer
    x = 463,400.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.